A secretory protein that exits from the ER within a vesicle will head directly to the:
A) Golgi complex.
B) plasma membrane.
C) nucleus.
D) mitochondria.
E) cytosol.
Answer: A
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When an organism dies, its muscles remain in a contracted state termed rigor mortis for a brief period of time. Contributing most directly to this phenomenon is
A. the lack of calcium to bind to troponin. B. the lack of ATP to break cross-bridges between thick and thin filaments. C. the absence of an oxygen supply to muscle. D. the inability to synthesize actin and myosin.
Free earlobes are dominant to attached ear lobes and brown eyes are dominant to blue eyes. Ricardo
has brown eyes and attached ear lobes. Ricardo’s mother has blue eyes and free ear lobes. Ricardo’s partner, Shanteel, has blue eyes and free ear lobes. Shanteel’s mother has brown eyes and attached ear lobes. What is the probability that Ricardo and Shanteel will have a child who has blue eyes and attached ear lobes? A. 100 percent B. 75 percent C. 50 percent D. 25 percent E. 0 percent
The equilibrium constant for complex formation between molecules A and B will depend on their relative concentrations, as well as the rates at which the molecules associate and dissociate
The association rate will be larger than the dissociation rate when complex formation is favorable. The energy that drives this process is referred to as ___________. (a) dissociation energy. (b) association energy. (c) binding energy. (d) releasing energy.
Why don't hormones build up in the body over time?
A. They do, but target tissues become desensitized over time. B. They are deactivated or degraded by target cells after hormone-receptor binding. C. They are filtered out of the blood by lymph tissues. D. Hormone synthesis is subject to positive feedback regulation. E. They are secreted from the body by exocrine glands.